CN103428218B - Method and system of forwarding capability information of user equipment - Google Patents

Abstract

Disclosed is a method and a system for mutually exchanging capability information of UEs for communication between a Circuit-Switched (CS) and IMS services (CSI) UE, which can use a CS call for voice communication while using an IMS session for PS service, and an IMS UE which uses an IMS session for both voice communication and PS service. A MGCF performs interworking of capability information between a CS message and an IMS message so that the IMS UE can process UE capability information through an IMS session request/response. When a call request message containing no capability information is created from a UE not supporting capability exchange, a CSI AS transfers the call request message to a peer UE after inserting estimable capability information of the UE into the call request message, and stores capability information of the counterpart UE for the UE.

Description

The method and system of the performance information of forwarding user equipment

The application is the applying date on April 25th, 2007, Application No. 200780015045.4, entitled " in internet The divisional application of the application for a patent for invention of the method and system of the performance information of protocol multi-media sub-system network transfer user equipment ".

Technical field

The present invention relates to including the circuit switching (CS) and internet protocol multimedia subsystem (IMS) meeting combined The combinational circuit of words exchanges calling and the interworking of IMS service (CSI), and more particularly, to for can support simultaneously CS calls the user equipment (CSI UE) with IMS sessions and can not support CSI and can only support the user equipment (IMS of IMS sessions UE the method and system communicated between).

Background technology

Circuit switching (CS) scheme is used for classical speech services.The fixation based on CS between two users of CS schematic design makings Communication path.As a comparison, internet protocol multimedia subsystem (IMS) is used based on packet friendship based on Internet Protocol (IP) The available communication path of (based on PS) is changed, is thus increased transmission efficiency and is guaranteed stability.Such IMS can support to be connected to it In the session that participates in of multiple users, such as One-to-one communication.According to CS schemes, by CS calling transmission message.As a comparison, root According to IMS schemes, message is transmitted by IMS sessions.

UE is referred to as " CSI " using the service of CS callings and IMS sessions simultaneously.CSI is used for voice transfer The CS callings of (that is, for voice communication), and while using the enhancing packet switch for being used to include messaging or file transmission (PS) the IMS sessions of service.The UE for supporting CSI is referred to as " CSI UE ".CSI UE can use the CS for real-time speech communicating to exhale Cry, while the IMS sessions serviced using the non real-time PS for such as messaging.Although CSI regards as voice communication utilizes CS The service of calling, but when CS network support Image Communications, CSI causes CS callings to be used for Image Communication and voice communication.

IMS network includes information gateway control function (MGCF), and it is responsible for the message (CS message) related to CS callings And the IMS entities of the interworking between the message (IMS message) related to IMS sessions.MGCF is provided will be included disappearing substantially Session initiation Protocol (SIP) header and Session Description Protocol (SDP) Parameter Switch in breath is integrated services digital network network (ISDN) User Part (ISUP)/bearer independent call controls the function of (BICC) message and is converted to ISUP/BICC The function of SIP headers and SDP parameters.According to CSI, CSI UE include the CS call setups of the performance information of CSI UE by transmission Message, and attempt the capability exchange with equity UE.In this case, reciprocity UE can be another CSI UE, CSI can not be supported and Can only support IMS sessions only IMS UE, support continuous voice call (VCC) service VCC UE and can support CSI and The UE of both VCC services.By capability exchange, with this information it is possible to determine whether every UE can use the CS for audio call to service, carry For both the IMS service for data transmission or offer CS services and IMS service.

When in the UE (that is, CSI UE) that can carry out CSI and CSI can not be carried out UE (that is, IMS terminal) between generate During call setup, CSI UE include the CS call setup message of the performance information of their own to IMS UE transmission.However, due to tradition MGCF does not have the method that the performance information that CSI UE are transmitted is converted to into sip message, so MGCF can not transmit CSI to IMS UE The performance information of UE transmission.As a result, it is impossible to exchanged by CS message execution performance between CSI UE and IMS UE, this causes Without direct IMS connections between two UE that request IMS connections are set up, although both the two UE can support the connection of IMS.

The content of the invention

Therefore, the present invention has been made, to solve the above-mentioned problems in the prior art, and a side of the present invention Face is to provide process performance between a kind of user equipment (UE) in internet protocol multimedia subsystem (IMS) network The method and system of information.

According to a further aspect in the invention, there is provided one kind for the CSI UE in MGCF (MGCF) and The method and system of the interworking between the performance information of IMS UE, the MGCF is responsible for the interactive work communicated between two UE The network entity of work.

According to a further aspect in the invention, there is provided one kind for communicated between IMS UE and CSI UE when, The method and system of the performance information of the performance information and CSI UE of IMS UE is processed in IMS UE.

According to a further aspect in the invention, there is provided one kind cause sip application server (AS) can add, delete and The method and system of the performance information of every UE is corrected, the AS is responsible for the interworking communicated between CSI UE and IMS UE Network entity.

According to a further aspect in the invention, there is provided a kind of for allowing, VCC AS marks are relevant to transmit what is received from it The information in the domain of sip message and the method and system being inserted in the domain for being identified in sip message, the VCC AS be responsible for for The network entity of calling positioning (anchoring) and the domain transfer of the UE of VCC can be carried out.

According to a further aspect in the invention, there is provided one kind is used to be passed in internet protocol multimedia subsystem (IMS) network The method for passing the performance information of user equipment (UE).The method includes：Transmission includes the circuit switching of the performance information of calling party UE (CS) call request message；The CS call request messages are received, the CS call request messages are converted to the performance including calling party UE Session initiation Protocol (SIP) message of information；With the sip message to the callee UE transmission performance information including calling party UE.

According to a further aspect in the invention, there is provided one kind is used in internet protocol multimedia subsystem (IMS) network The method of the performance information of middle transmission user equipment (UE).The method includes：Reception includes the meeting of the performance information of calling party UE Words initiation protocol (SIP) message；The sip message is converted to into circuit switching (CS) calling of the performance information including calling party UE Request message；With the CS call request messages to the callee UE transmission performance information including calling party UE.

According to a further aspect in the invention, there is provided one kind is used to exchange CS and internet protocol multimedia in combinational circuit The method that the performance information of calling part user equipment UE is transmitted in subsystem, IMS service CSI, the method includes：CSI application services Device AS receives the first Session initiation Protocol sip request message for originating from the calling party UE, and the calling party UE is IMS UE；CSI AS generates the second sip message of the performance information comprising calling party UE；The WMG of the network belonging to CSI AS to CSI AS Second sip message of control function MGCF performance information of the transmission comprising the calling party UE；And MGCF includes being somebody's turn to do by conversion Second sip message of the performance information of calling party UE and transmit the performance information to the callee UE in CS domains, the callee UE It is CSI UE, wherein, the performance information of the calling party UE includes：(1) represent whether calling party UE can simultaneously use CS and divide Group exchanges the information of PS services；(2) whether calling party UE is represented by the IMS state information of IMS registration；(3) performance information is represented The version information whether being updated；(4) the personal mobile device ME identifiers of calling party.

According to a further aspect in the invention, there is provided one kind is used to exchange CS and internet protocol multimedia in combinational circuit The system that the performance information of calling part user equipment UE is transmitted in subsystem, IMS service CSI, the system includes：Calling party UE, should Calling party UE is IMS UE；Callee UE, the callee UE is CSI UE；And CSI application server ASs, for receiving origin In the first Session initiation Protocol sip request message of the calling party UE, the 2nd SIP of the performance information comprising calling party UE is generated Message, and to the MGCF MGCF performance informations of the transmission comprising the calling party UE of the network belonging to CSI AS The second sip message, MGCF by conversion include the calling party UE performance information the second sip message and to the quilt in CS domains The side of crying UE transmits the performance information, wherein, the performance information of the calling party UE includes representing calling party UE whether can be while making The information that serviced with CS and packet switch PS, represent calling party UE whether by the IMS state information of IMS registration, represent performance letter Version information and the personal mobile device ME identifiers of calling party that whether breath is updated.

According to a further aspect in the invention, there is provided one kind is used to exchange CS and internet protocol multimedia in combinational circuit The method that the performance information of calling part user equipment UE is transmitted in subsystem, IMS service CSI, the method includes：Transmission includes master The circuit switching (CS) call request message of the performance information of the side of crying UE；MGCF MGCF receives the CS call requests Message；The CS call request messages are converted to MGCF the Session initiation Protocol sip message of the performance information including calling party UE； And MGCF is to the sip message of the callee UE transmission performance information including calling party UE, wherein, the calling party UE's Performance information includes representing information, representative master that whether calling party UE can simultaneously use circuit switching (CS) and packet switch PS to service The side of crying UE whether by the IMS state information of IMS registration, represent version information that whether performance information be updated and calling party UE Personal mobile device ME identifiers.

According to a further aspect in the invention, there is provided one kind is used to exchange CS and internet protocol multimedia in combinational circuit The method that the performance information of callee's user equipment (UE) is transmitted in subsystem, IMS service CSI, the method includes：Media gateway controlling Function MGCF receives the CS response messages of the performance information for including the callee UE from the CS domains of callee UE；MGCF is by IMS The performance information is interacted in domain and CS domains and generate the SIP response messages of the performance information including the callee UE；MGCF is to caller Square UE transmission includes the SIP response messages of the performance information of the callee UE, wherein, the performance information of the callee UE includes representing Information that whether callee UE can be serviced using circuit switching (CS) and packet switch PS simultaneously, whether callee UE is represented by IMS registration IMS state information, represent the personal mobile device ME identifiers of version information that whether performance information be updated and callee UE.

According to a further aspect in the invention, there is provided one kind is used to exchange CS and internet protocol multimedia in combinational circuit The system that the performance information of user equipment (UE) is transmitted in subsystem, IMS service CSI, the system includes：Calling party UE；Callee UE；And MGCF MGCF, for receiving the performance information for including the callee UE from the CS domains of callee UE CS response messages, by IMS domain and CS domains interaction the performance information and generate the performance information including the callee UE SIP response messages, and to calling party UE transmission include the callee UE performance information SIP response messages, wherein, institute Stating the performance information of callee UE includes representing whether callee UE can simultaneously use circuit switching (CS) and packet switch PS to service Information, represent callee UE whether by the IMS state information of IMS registration, represent the version letter whether performance information is updated The personal mobile device ME identifiers of breath and callee UE,

Description of the drawings

It is described in detail below by combine that accompanying drawing carries out, the above and other exemplary features of the present invention, aspect and advantage Will become apparent from, wherein：

Fig. 1 be a diagram that the block diagram of the construction of the mobile communications network for supporting CSI；

Fig. 2 be a diagram that the message flow when CSI UE ask CS call setups to IMS UE according to embodiments of the present invention Flow chart；

Fig. 3 A and 3B be a diagram that of the invention when IMS UE invite (SIP INVITE) to disappear to CSI UE transmission SIP The flow chart of message flow during breath；

Fig. 4 be a diagram that the flow chart of the process of MGCF of the invention；

Fig. 5 be a diagram that the flow chart of the process of UE of the invention；

Fig. 6 A and 6B be a diagram that the message transmitted to CSI UE as IMS UE when voip call is asked of the invention The flow chart of stream；

Fig. 7 A and 7B be a diagram that the message flow when VCC UE transmit CS call requests to CSI UE of the invention Flow chart；

Fig. 8 be a diagram that the flow chart of the process of CSI AS of the invention；With

Fig. 9 be a diagram that the block diagram of the configuration of SIP AS of the invention.

Specific embodiment

The example embodiment of the present invention will be described in detail with reference to the accompanying drawings.In the following description of the present invention, omit here The known function of merging and the detailed description of configuration, to avoid so that subject of the present invention is fuzzy.In addition, used in the description Term allows for the function of the corresponding component used in the present invention and defines, and can according to user, the intention of operator or Put into practice and change.Therefore, it is necessary to be based on the entire content disclosed in the description to explain this definition.

Before the description of example embodiment of the present invention, will be briefly described present embodiments can apply to many matchmakers of Internet Protocol The construction of body subsystem (IMS) network.

Fig. 1 be a diagram that the block diagram of the construction of the mobile communications network for supporting CSI.Although will be based on global mobile communication system System (GSM) and General Packet Radio Service (GPRS) are carried out for universal mobile telecommunicationses service (UMTS) mobile communications network Hereinafter describe, it should be noted that the scope of the present invention is not limited to such particular technology or term.

In FIG, supporting the mobile communications network of CSI includes radio access network (RAN) 104 and core net (CN) 106. RAN 104 causes user equipment (UE) 102 to have access to CN 106.According to the RAN 104 of the radio access technologies for using etc. Construction be commonly known in the art, therefore will omit its detailed description.

CN 106 includes CS domains 114, packet switch (PS) domain 108 and IMS domain 122.CS domains 114 include supporting CS callings Network entity, it includes mobile switching centre (MSC) 120 and the He of WMG (MGW) 116 as representative network entity 118.The process of MSC 120 originates from/terminates at the signal of the node B that RAN 104 includes, and plays executive control operation and cause section The effect of the central controller that point B can effectively work.MGW 116 and 118 supports the bearer services and control business in CS domains 114.

Ps domain 108 supports packet-based service, and including Serving GPRS Support Node (SGSN) 110 and gateway GPRS Serve as a diplomatic envoy point (GGSN) 112.SGSN 110 manages the information in the place about UE, and performs security-related function, accesses control System etc..GGSN 112 is the component of GPRS network, and it plays SGSN 110 and such as external network of packet data network (PDN) The effect of the radio gateway between 130.UE 102 can access PDN 130 using GGSN 112.

IMS domain 122 includes supporting the network entity of IMS sessions.Specifically, IMS domain 122 includes service call session control Function (S-CSCF) 124, application server (AS) 126 processed and MGCF/WMG (MGCF/MGW) 128. S-CSCF 124 sets up IMS sessions, and plays and process the Session initiation Protocol (SIP) related to IMS received from UE 102 and disappear The effect of breath.Service needed in order to provide UE 102, the sip message entity that the transmission of S-CSCF 124 IMS domain 122 includes, So that session can be completed.

AS 126 is for providing a user with such as Email, pushing (the Push To Talk that talk by cellular over Cellular：The entity of application PoC) etc..For example, support that the AS (CSI AS) of CSI obtains conduct and to be delivered to user Multimedia session or transmitted by IP voice (VoIP) calling request message SIP invitation messages, and analysis asked Medium type.Then, the media information that SIP invitation messages include is separated into voice medium information and packet media by CSI AS Information, by voice medium information transmission to CS domains, and is delivered to IMS domain by packet media information.

MGCF/MGW 128 is the network entity for enabling the communication between IMS user and CS user.MGCF/MGW 128 are included as the negative of the interworking between IMS network and existing network (for example, public switch telephone network (PSTN)) The MGCF and the IMS-MGW for media conversion of the gateway of duty Signalling conversion.Although it is not shown, MGCF/MGW 128 may also include destruction gateway control function (BGCF), and the destruction gateway control function (BGCF) is for terminating in view of CS The routing optimality of calling and select the network entity of the optimal MGCF corresponding to the contact point being connected with CS domains.BGCF may include In MGCF/MGW 128.

In addition to aforementioned entities, each domain can be added including one or more different entities, and these different entities Can work in CSI.

When CSI UE transmit CS callings in the network with previous constructions to the UE (that is, IMS UE) that can not carry out CSI When setting up message, the MGCF in terminating party network to SIP invitation messages are added on the CSI that CS call setup message includes The performance information of UE, and SIP invitation messages are delivered to into IMS UE.When the IMS UE that can not perform CSI add to SIP invitation messages Plus their own performance information and when transmitting SIP invitation messages, in the terminating party network being located at positioned at callee CSI UE MGCF inserts the performance information that SIP invitation messages include in the user-user information field of CS call setup message, and so Afterwards by CS call setups messaging to CSI UE.Therefore, MGCF can process the performance information of every UE, and IMS UE can be obtained Take the performance information of reciprocity UE.

Example embodiment of the invention, there is provided a kind of that CSI UE are passed through with the UE that can not carry out CSI The interworking function of MGCF exchanges the scheme of interactive performance information, i.e., do not comprise only pass UE whether can and meanwhile access CS domains and The information (for example, while CS and PS performances) of ps domain, ID (for example, the personal ME marks for identifying the particular UE for belonging to user Symbol), with regard to UE current performance version information (for example, UE performances version) and about the information of IMS registration state, and And related or related with the UE performance information of the various and terminal including the communication that can be usefully used between terminal so that can Utility information realizes between users IMS session set-ups.In addition, according to another example embodiment of the invention, there is provided one Plant the scheme of the function of extension IMS UE so that IMS UE add the performance information of their own to invitation message, and receive and divide Analysis includes the message of performance information.

Fig. 2 be a diagram that according to embodiments of the present invention when CSI UE ask CS call setups to the UE that can not carry out CSI When message flow flow chart.In fig. 2, IMS UE are illustrated as that the UE of CSI can not be carried out.

When the UE-A 201 as CSI UE be intended to arrange CS audio calls when, UE-A 201 in step 211 user- The CS call setup message of the performance information for including UE-A 201 is created in subscriber signaling (UUS) field, and by CS call setups Messaging is to network entity, such as MSC (CS network entities) in CN domains.In this case, performance information may include UE's Radio performance information, access performance while CS domains and ps domain, the identification information about UE, the version about UE performances are believed Breath, IMS registration information etc..In addition, performance information may include it is can exchanging between the terminals with performance-relevant information.This is wireless Electrical property represents the physical property of the accessible frequency channels of such as UE, and can Additional representative UE whether can access ps domain and/or The information in CS domains.

Table 1 shows the property that the UUS information fields by representing user-user information in CS call setup message are transmitted The form of energy information.

Table 1

The network entity 203 in the CS domains that UE-A 201 is located in step 213 sets the CS transmitted from UE-A 201 callings Vertical message is converted to ISUP/BICC initial address messages (ISUP/BICC IAM), and ISUP/BICC IAM are delivered to into MGCF 205, the MGCF 205 are the CSI interworking entities that callee can not be carried out in the IMS domain that the UE-B 209 of CSI is located at.When When having been received by ISUP/BICC IAM, MGCF 205 performs in step 215 interworking function, will be from ISUP/BICC The CS call setup message that IAM is extracted is converted to based on the message of Session Initiation Protocol, particularly SIP invitation messages.Except conversion performance Information need process outside, be by the process that CS call setup message is converted to SIP invitation messages it is commonly known in the art, And be not directly dependent upon with the present invention, therefore its detailed description will be omitted.

In detail, in order to the interworking for performing the performance information of UE-A 201 is operated, MGCF 205 in analysis IAM by wrapping The pattern of the information field for including also is created configuring specific SIP headers in predetermined scheme by analyzing and processing UUS fields Sip message.In other words, when IAM is had been received by, the UUS information fields that the analysis IAM of MGCF 205 include, when UUS information field bags When including the performance information of UE-A 201, extract the performance information of UE-A 201, and configure SIP invitation messages, as described later as.

In this case, for the performance information for inserting UE-A 201 in the sip message of such as invitation message, may adopt With expanded definition, it depends on the type of performance information and promotes MGCF 205 to use different pattern.However, in this case, As long as the number of types of performance information increases, the function of the MGCF 205 for defining new pattern must be just updated, this causes autgmentability The shortcoming of degradation.For this reason, the present invention proposes the property for enabling MGCF 205 that UE-A 201 is configured in SIP invitation messages The various schemes of energy information.According to aftermentioned scheme, MGCF 205 is converted to the performance information for including in UUS information fields Suitable form.Conversely, MGCF 205 also has the performance information for having included in a sip message is inserted according to suitable form To the function in the UUS information fields of CS signaling messages.Disclose the performance that MGCF 205 includes to CS call setup message Information carries out encoding so that four kinds of schemes being included in SIP invitation messages of performance information.First scheme is to sip message The addition of SIP headers represent the supplemental characteristic mark of performance information, alternative plan be using extending mark language (XML) form to The source body insertion performance information of sip message, third program is the source body addition property using text formatting to sip message Energy information, and fourth program is to add performance information to the source body of sip message by the user of binary format.

Will be described in carrying out performance information coding now so that performance information can be included in SIP invitation messages These four schemes.

According to first scheme, when the performance information of UE is represented by the characteristic indication in SIP headers, in such as the 3rd generation partner Each characteristic value of performance information is represented with definition in the range of the correlation standard of project (3GPP).For example, identifier letter Breath is defined as the characteristic value of the form of such as " PMI (personal ME (mobile device) identifier=XXXX ", and UE performance information quilts The characteristic value of such as form of " UCV (UE performance versions)=XX " is defined as, each of which X represents hexadecimal value.For generation Whether table may simultaneously access CS domains and ps domain, using such as "+g.3gpp.cs- voice " defined in 3GPP or "+ The existing characteristic value of g.3gpp.cs- video ", or the independent characteristic indication for representing ps domain availability can be used.And, in order to incite somebody to action IMS registration state representation is UE performance informations, can use another independent feature.The feature of the representative performance information in SIP headers The form and form of mark is based on the form defined in relevant criterion.Contact (contact) header, user-agent headers, Server header etc. can be used as including the SIP headers of features described above mark.

Alternative plan is to add performance information to the source body of sip message using XML format.Table 2 is shown below The performance information of CSI UE is encoded to into XML format and the performance information after coding is inserted into into the message master of SIP invitation messages Example in body.The authenticator of the XML of table 2 is merely illustrative, therefore can determine its detailed content by Systems Operator.

Table 2

The correct coding of each performance information field used in for table 2 is predetermined.And, each performance information word Section to be defined between UE and network be predetermined, and with can be by the UE's and network for being able to carry out function proposed by the present invention The value of any Entity recognition.

Third program is that performance information is encoded to into text formatting, and in the source body of sip message after insertion coding Performance information.The example of the performance information for being encoded to text formatting is shown in table 3.

Table 3

Table 3 shows the example of available authenticator in XML, and wherein detailed content and definition is based between UE and network and advises Fixed rule.

Fourth program is that performance information is encoded to into binary format and in the source body of sip message after insertion coding Performance information.The example of the performance information for being encoded to binary format is shown in table 4 below.

Table 4

When ISUP/BICC IAM are converted to SIP invitation messages by MGCF 205, via UE-B in step 217 The network entity 207 (being represented by " X-CSCF ", wherein " X- " can be " S- " or " P- ") of 209 IMS domains for just accessing is to UE-B 209 transmission SIP invitation messages.UE-B 209 has the function of extracting the performance information that SIP invitation messages include and creates bag Include the request of the performance information of their own or the function of response message.UE-B 209 extracts and stores SIP invitations in step 219 The performance information of the UE-A 201 that message includes.Thereafter, in step 221 by auxiliary between UE-A 201 and UE-B209 Help the exchange of message to perform call-setup process.

As the IMS UE that can not carry out CSI UE-B 209 in step 223 using one of these four schemes by its from Oneself performance information encodes and is inserted into 183 session progress messages or SIP OK message of the SIP responses as SIP invitation messages In.To pass through including the process messages of SIP 183 or the OK message of SIP 200 of the performance information of UE-B 209 in step 225 The network entity 207 of the IMS domain belonging to UE-B 209 is delivered to MGCF 205.

MGCF 205 perform in step 227 by the OK message of SIP 183/200 be converted to ISUP/BICC connection/answer disappear The interworking function of breath (ISUP/BICC CON/ANM).In this case, MGCF 205 is using from as can not carry out CSI The performance information that includes of the OK message of SIP 183/200 of the transmission of UE-B 209 of IMS UE be inserted into ISUP/BICC In the user-user information of CON/ANM.

In step 229, using as the CS response messages of the user-user information for including there is the performance information after coding ISUP/BICC CON or ACM (address completion message)/ANM be delivered to the CS network entities 203 of UE-A 201.CS network realities ISUP/BICC CON or ACM/ANM are converted to Call- Control1 (CC) connection (CONNECT) message by body 203, and CC connections are disappeared Breath is delivered to UE-A 201 (step 231).The user-user information of the CC connection messages that UE-A 201 is received includes UE-B 209 Performance information.UE-A 201 stores the performance information of UE-B 209 in step 233, thus identifies the performance letter of UE-B 209 Breath, and determine that UE-A 201 can form the IMS to UE-B 209 and access by the performance information.

Fig. 3 A and 3B be a diagram that according to another embodiment of the present invention when the IMS UE that can not carry out CSI are passed to CSI UE The figure of message flow when sending SIP invitation messages.The IMS UE that CSI can not be carried out represent such UE, and it is not only supported simultaneously Using CS callings and the CSI of IMS sessions, but by sip message transmission/receptivity information, and the performance for receiving can be can recognize that Information.

In figure 3, CSI is not supported but the calling party UE-A 301 of handlability energy information creates in step 315 bag Include the SIP invitation messages of the performance information of their own.In this case, UE-A 301 utilizes one of above-mentioned four kinds of schemes in SIP The performance information of their own is inserted in invitation message.In step 317, the SIP invitation messages that UE-A 301 is created are via conduct The X-CSCF 303 of the IMS network entity of originating-side network and via the X-CSCF of the IMS network entity as terminating party network 305 and be passed to the SIP AS 307 of terminating party network.

In this case, based on existing route transfer scheme SIP is invited via originating-side network and terminating party network Message route is sent to SIP AS 307.SIP AS 307 are received from the UE-A 301 as the IMS UE that can not carry out CSI and used The SIP invitation messages of request are set up in session/call, and special domain (that is, IMS domain or CS are determined whether in step 319 Domain) forwarding SIP invitation messages.SIP AS 307 include all kinds AS, including the disappearing from the reception of terminating party network with forwarding The network domains of the function of breath select (NeDS) AS, the NeDS functions with VCC services and provide between IMS sessions and CS callings Call continuity control function (CCCF) AS of successional function and it is separated into CS with NeDS functions and by IMS sessions The CSI AS of the function of audio call and IMS data sessions.

In this case, SIP AS 307 determine SIP and invite by the media parameter that includes of analysis SIP invitation messages Please the message domain to be delivered to.By SIP AS 307, SIP invitation messages are included by the network entity 311 in CS domains Voice medium information transmission to the UE-B 313 as callee CSI UE.And, if SIP AS 307 are from UE-A The 301 SIP invitation messages for receiving include the media information in addition to voice medium, then the media information can pass through IMS domain Network entity and be delivered to the UE-B 313 as CSI UE.For separating SIP invitation messages and passing it to CS domains and IMS The process in domain is not directly dependent upon with the present invention, so its detailed description will be omitted.

When it is determined that transmitting the voice medium information that SIP invitation messages include by CS network entities, SIP AS 307 In step 321 by IMS network entity 305 by the voice medium information transmission of SIP invitation messages to SIP AS 307 MGCF 309 in consolidated network so that voice medium information can be converted to CS message.When having been received by SIP invitation messages When, MGCF 309 checks the performance information whether SIP invitation messages include UE-A 301.Then, if SIP invitation messages include The performance information of encoded UE-A 301, then MGCF 309 in step 323 by based on user-user information format encode Performance information and performance information is inserted in user-user information, and create and include the ISUP/BICC of user-user information IAM.ISUP/BICC IAM are delivered in step 325 MGCF 309 the CS network entities 311 of accessible UE-B 313.

When ISUP/BICC IAM are had been received by, ISUP/BICC IAM are converted to CS callings and are set by CS network entities 311 Vertical CS sets up message, and CS is set up into message transmission to UE-B 313 in step 327.Message is set up when CS is had been received by When, UE-B 313 stores in step 329 the performance information that CS sets up UE-A 301 that message includes.Set up by storing CS The performance information of the UE-A 301 that message includes, UE-B 313 can recognize that the performance information of UE-A 301, and can pass through the property Energy information determines whether UE-B 313 can arrange the connection by IMS domain and UE-A 301.

Perform in step 331 and set up needed for the call setup between the UE-A 301 of message and UE-B 313 in response to CC Aid in treatment after, or directly after receiving CC and setting up message, UE-B 313 sets up message establishing CC to connect in response to CC Message.The CC connection messages of establishment include user-user information, and the information includes the performance information of encoded UE-B 313. The CC connection messages for creating UE-B 313 in step 333 are delivered to CC network entities 311.Then, CC network entities 311 exist In step 335 by CC connection messages be converted to ISUP/BICC CON/ACM/ANM and by ISUP/BICC CON/ACM/ANM transmission To MGCF 309.

After ISUP/BICC CON/ACM/ANM are had been received by, MGCF 309 is in step 337 based on in SIP User-user information during the suitable encoding scheme of insertion is to convert ISUP/BICC CON/ACM/ANM in message includes UE-B 313 performance information, and in the session progress messages of SIP 183 or SIP of the SIP responses as SIP invitation messages Performance information in 200 OK message after insertion conversion.The performance information that user-user information includes is encoded and is inserted into Scheme in sip message is identical with such scheme.In step 339, according to SIP invitation messages routed path opposite direction (that is, via terminating party IMS network entity 305, SIP AS 307, terminating party IMS network entity 305 and origin side's IMS network reality Body 303) to transmit the OK message of SIP 183/200 that MGCF 309 is created to UE-A 301.When having been received by including UE-B 313 Performance information SIP 183/200 OK message when, UE-A 301 stores in memory in step 341 UE-B 313 Performance information.

Fig. 4 be a diagram that the flow chart of the process of MGCF according to embodiments of the present invention.MGCF represent be responsible for CS message and Network entity in the IMS domain of the interworking between IMS message.

When MGCF receives in step 401 the message of initiation from UE, MGCF determines in step 403 the message pair The related message (i.e. CS message) of Ying Yuyu CS callings or the message (i.e. IMS message) related to IMS sessions.Phase is called with CS The message of pass includes all message of ISUP/BICC protocol types, and the message related to IMS sessions includes Session Initiation Protocol type All message.

When the message for having received correspond to CS message when, MGCF check in step 405 the CS message whether include containing The UUS fields of the performance information of UE.When the CS message does not include the UUS fields of the performance information containing UE, MGCF is proceeded to Step 411, wherein MGCF perform the interworking operation of the information in addition to performance information included for CS message.

Conversely, when CS message includes the UUS fields of the performance information containing UE, MGCF proceeds to step 409, wherein MGCF inserts performance information in the IMS message changed from CS message.Although being carried out to the performance information of UE using wherein MGCF Then pretreatment simultaneously performs the example of the interworking operation of other fields and describes the present invention, but the invention is not restricted to The order of MGCF processing fields.

Therebetween, when the message received in step 401 corresponds to IMS message, MGCF checks in step 407 the performance of UE Whether information is included in the SIP message body of IMS message or SIP headers.If the performance information of UE be included in SIP headers or In SIP message body, then MGCF proceeds to step 409, and wherein MGCF inserts performance letter in the CS message changed from IMS message Breath.When the performance information of UE is included in SIP headers, can include according to characteristic indication form or according to corresponding different-format Individually include performance information in multiple SIP headers of Contact header, user-agent headers and server header.

Conversely, when the performance information of UE is not included in sip message, MGCF proceeds to step 411, wherein MGCF holds The interworking operation of the information in addition to performance information that row IMS message includes.As described above, the field of IMS message Processing sequence it doesn't matter with subject of the present invention.

When during the performance information of UE is included in CS message or IMS message, MGCF execution performance information in step 409 Interworking is operated.

If the message received in step 401 corresponds to CS message, and the performance information of UE is included in the UUS of CS message In field, then MGCF extracts and analyzes the performance information that UUS fields include, by means of one of four kinds of schemes coding efficiency letter is carried out Breath, and the performance information in the SIP headers or source body of sip message after insertion coding, the thus friendship of execution performance information Interworking is operated.

If conversely, the message received in step 401 corresponds to IMS message, and the performance information of UE is included in IMS and disappears In the SIP message body or SIP headers of breath, then MGCF is extracted and analytical performance information, and is set in CS based on correlative coding form Performance information in the UUS fields of vertical message after insertion coding.

Then, in step 411, MGCF perform in CS message or IMS message except UE performance information other letters The interworking operation of breath field.In detail, the corresponding word during other information field is converted to IMS message or CS message by MGCF Section.Next, in step 413, the message for causing is operated by interworking according to outside (outgoing) direction transmission of correspondence. Then, in step 415, MGCF waits the next message to be received, and returns to step 401.

Fig. 5 be a diagram that the flow chart of the process of UE according to an embodiment of the invention.UE does not support CSI, but has There is the function of the performance information that the reciprocity UE that sip message includes is received, analyzes and stored in UE.

In Figure 5, in step 501, IMS UE access networks, perform the processes such as safety, connection (that is, attached), thus IMS registration is completed, to receive IMS service.

In step 503, UE determines whether the event for generating such as message sink or message establishing.It is described below The process of message sink and the message establishing only related to the present invention in the various events that can be generated in UE.

When " message establishing " event is generated in UE, UE creates in step 505 sip message.In step 511, UE Then according to predetermined scheme (for example, XML schema, binary scheme, Text Plan etc.) is inserted into the performance information of their own In the SIP headers (for example, Contact header, user-agent headers, server header etc.) of sip message or it is inserted into sip message In source body.Describe for convenience and individually describe step 505 and 511, and can be while execution step 505 and 511.Connect down Come, UE includes the sip message of performance information in step 513 according to correspondence outward direction transmission, and proceeds to step 515. In step 515, UE waits the next event to be generated and returns to step 503.

When " message sink " event is generated in UE, UE determines whether the performance information of equity UE wraps in step 507 Include in the SIP headers or SIP message body for generating the sip message of reception of event.When the performance information of reciprocity UE includes When in the sip message for receiving, UE proceeds to step 509.In step 509, UE processes what is included in the sip message for receiving The field of the performance information of reciprocity UE and the sip message for receiving, and the information after storage wherein is processed according to necessity.Phase Instead, when the performance information of reciprocity UE is not included in the sip message for receiving, UE is performed for processing the sip message for receiving General operation, and proceed to step 515.In step 515, UE waits the next event to be generated and returns to step 503.

Will be given for the following description of below scheme according to embodiments of the present invention, i.e. using SIP AS so as to CSI The performance information of UE transmission equity UE causes the scheme of the performance information of SIP AS codified UE.

When CS call setups are generated between the CSI UE and IMS UE that can carry out CSI, by what is transmitted from IMS UE SIP invitation messages are delivered to the CSI AS being located at CSI UE in identical network.IMS UE can generate SIP and invited to disappear The IMS UE of breath, or can be VCC UE.If IMS UE are VCC UE, by supporting that the VCC AS of VCC services will be from The CS message that VCC UE are generated is converted to IMS message, and and then passes it to recipient.CSI AS are received and are delivered to CSI UE Invitation message, the voice medium information in the media information that invitation message is included is converted to CS and sets up message, to CS domains Transmission CS sets up message, will be converted to SIP invitation messages about the media information of voice, data etc., and and then to IMS domain transmission SIP invitation messages.

When IMS UE transmit SIP invitation messages to set up IMS UE and CSI by CSI AS to the CSI UE for receiving CSI During the IMS sessions of the VoIP voices between UE, CSI AS are invited to the MGCF transmission SIP being located in identical network with CSI AS and disappeared Voice medium information in breath so that CS domains can be passed through by CS call setups message transmission to CSI UE.In this case, due to CSI UE can not receive the performance information of IMS UE, so CSI UE can not identify whether reciprocity UE is IMS UE.In addition, by Other performance informations of CSI needs can not be received in CSI UE, it is impossible to normally provide CSI.And, when IMS UE are passed SIP invitation messages are sent so that during the IMS sessions for setting up the multimedia service between IMS UE and CSI UE, CSI UE can not pass through Performance information of the CS call setups message sink to IMS UE so that CSI can not possibly be provided.

As described above, when UE can not include the performance information of their own in the request message transmitted from UE, according to this The SIP AS of inventive embodiments insert the performance information of UE in request message, and and then the request message are delivered to into equity UE.In detail, the present invention is proposed using CSI AS to generate the performance information of IMS UE and to pass it to CSI UE's Scheme and using VCC AS (or with VCC UE be located at consolidated network in MGCF, i.e., the MGCF in originating-side network) With CSI AS to generate the performance information of VCC UE and to pass it to the scheme of CSI UE.

Assume that VCC UE may depend on the preference of user, the policy of provider, network environment and radio environment and use By the service of CS domains or IMS domain, then VCC UE can support both CS services and IMS service.With VCC UE conversely, CSI UE can Simultaneously using the service by IMS domain and CS domains.

According to using CSI AS to add the scheme of the performance information of IMS UE, as supportive permutable CSI UE and When not supportive permutable normal 3rd generation (3G) IMS UE communicate with one another, transmit IMS UE's to CSI UE by CSI AS Performance information.

IMS UE can be used alone CS service and IMS service, but can not use combination CS and IMS service, i.e. CSI. So, in the following description, the UE of the capability exchange function that IMS UE are defined as that not there is CSI UE to have.In addition, CSI AS is the SIP AS being located in the IMS network of callee UE, receives the SIP invitation messages from direction of transfer recipient transmission, point The medium type that analysis SIP invitation messages include, the voice medium information that transmitting the SIP invitation messages to CS domains includes is caused Can be CS callings by the transfer of voice medium information, and video and packet media information etc. are transmitted by IMS domain.

Fig. 6 A and 6B be a diagram that according to embodiments of the present invention when IMS UE are asked to CSI UE transmission voip calls Message flow flow chart.

As can using the UE-A 601 of the calling UE of IMS service be do not support CSI and VCC service but can individually make With CS services and the general 2G/3G UE of IMS service.That is, UE-A 601 is simple IMS UE.UE-A 601 is raw in step 615 Into SIP invitation messages, to set up the voip conversation with the UE-B 613 as callee CSI UE.In this case, SIP is invited Please message including UE-A 601 performance information.In step 615, SIP invitation messages are sent to as UE-A by route The X-CSCF 603 of the network entity of the IMS domain belonging to 601, and be sent to as the terminating party net belonging to UE-B 613 by route The X-CSCF 605 of the IMS network entity of network, and be then passed to according to rule predetermined in terminating party IMS network entity 605 The CSI AS 607 that then (for example, the initial filter standard of UE-B 613) is operated according to Proxy Signature Scheme.

Once confirmation receives SIP invitation messages by IMS domain, CSI AS 607 are determined that as SIP invitation messages The UE-A 601 in source can use by the service of ps domain, and in IMS registration state.Based on such determination, CSI AS 607 in step 617 to for example as UE-A 601 service capability information " PS can use " and as IMS state information The performance information of " IMS registration " etc. is encoded, and is inserted it in the SIP headers or source body of SIP invitation messages.Change Yan Zhi, CSI AS 607 by obtain all properties information that can obtain in SIP invitation messages transmit from UE-A 601 with/ Or by estimating, and structural behavior information, and the performance information is inserted in SIP invitation messages.

In detail, CSI AS 607 can pass through the header information that inspection has included in SIP invitation messages, for example, service ID, " from header " information, " Contact header " information and the overall situation including application service information can route transmission UA URI (GRUU) come determine UE-A 601 had requested that CS domains or ps domain in service, and can determine that the service that relevant UE can be used Information.For example, when " from header " information is arranged to " user=phone ", this represents UE-A 601 corresponding to CS UE.

According to another embodiment of the present invention, when network provides operation to store the number of the performance information about each subscriber UE According to storehouse network entity when, CSI AS 607 can by the CS/PS that query processing to network entity is obtained about UE-A 601 With information and other relevant performance informations.

That is, the header information that CSI AS 607 are included by analysis SIP invitation messages, or by using by network The performance information of the UE-A 601 that the query processing of entity is obtained can be used by the service in CS domains still determining UE-A 601 The service by ps domain can be used, and determines whether to have registered UE-A 601 in the ims domain.

As the scheme for inserting performance information in SIP invitation messages by coding, as described above, existing to SIP headers Addition supplemental characteristic mark first scheme, according to XML format in the source body of sip message record performance information second Scheme, according to text formatting in the source body of sip message the third program of record performance information and according to binary format The fourth program of record performance information in the source body of sip message.

In step 619, the SIP invitation messages of the request VoIP service initiated by UE-A 601 are converted into CSI AS The SIP invitation messages of 607 performance informations that UE-A 601 is inserted by coding, and and then be passed by IMS network entity To the MGCF 609 of terminating party network.It is to be based on the step of route transmission SIP invitation messages from CSI AS 607 to MGCF 609 Technology specified in correspondence standard (for example, 3GPP standards).MGCF 609 is in step 621 by including the performance of UE-A 601 The SIP invitation messages of information are converted to the ISUP/BICC IAM as CS message.In this case, the performance letter of UE-A 601 Breath is encoded and is inserted in the UUS information fields of ISUP/BICC IAM.

When the performance information of the UE-A 601 for having been inserted by CSI AS 607 is encoded and is inserted in UUS information fields When, the performance information transmitted by UUS information fields can have the form for example shown in upper table 1.Coding efficiency information and by its The detailed protocol being inserted in the UUS information fields of CS message is based on implementation method or corresponds to method specified in standard.

In step 623, the ISUP/BICC IAM created by the CS/IMS translation functions of MGCF 609 are delivered to The network entity 611 (for example, MSC) in the CS domains belonging to UE-B 613.In step 625, mark is about the UE-B in CS domains ISUP/BICC IAM are converted to CC and set up message by the CS network entities 611 of the information in 613 place, and and then are set up CC Message transmission is to UE-B 613.In step 627, UE-B 613 sets up from CC and extracts what is added by CSI AS 607 in message The performance information of UE-A 601, identifies and initiated the message from UE-A 601, and stores the performance information of UE-A 601.Base In the performance information of the UE-A 601 of storage as described above, UE-B 613 identifies UE-B 613 and can set up and UE-A in future 601 IMS sessions.As necessary, call-setup process is performed between UE-A 601 and UE-B 613 in step 629.

When call setup is completed, CSI UE-B 613 set up messaging CC connection message (step in response to CC 631).The user-user information field (that is, UUS information fields) of the CC connection messages that CSI UE-B 613 are created includes passing It is delivered to the performance information of the UE-B 613 of the UE-A 601 of reciprocity UE as CSI UE-B 613.CS network entities 611 are in step CC connection messages are converted to into ISUP/BICC CON/ANM in rapid 633, and ISUP/BICC CON/ANM are delivered to into MGCF 609.In step 635, MGCF 609 is converted to ISUP/BICC CON/ANM as the SIP responses of SIP invitation messages The session progress messages of SIP 183 or the OK message of SIP 200.In this case, MGCF 609 is in step 635 by from ISUP/ The performance information of the UE-B 613 that BICC CON/ANM are extracted encodes and is inserted into the session progress messages of SIP 183 or SIP 200 In OK message.In order to encode and being inserted in the OK message of SIP 183/200, using one of aforementioned four scheme performance information.

In step 637, via the IMS network entity 605 of UE-B 613 by the OK message transmissions of SIP 183/200 to CSI AS 607.When 183/200 OK message of SIP is had been received by, CSI AS 607 extract and store SIP 183/ in step 639 The performance information of the UE-B 613 that 200 OK message include.Then, CSI AS 607 in step 641 as it is by SIP 183/200 OK message transmissions are to UE-A 601, or the performance information of UE-B 613 is being removed from the OK message of SIP 183/200 UE-A 601 is passed it to afterwards.In this case, based in IMS domain specified in correspondence standard (for example, 3GPP standards) Sip message route transfer scheme, by the OK message transmissions of SIP 183/200 to UE-A 601.When future is in the Hes of UE-A 601 When there is IMS accesses between UE-B 613, the performance information of the UE-B 613 for storing in CSI AS 607 can be used.

The following description of the example below is will be given for, wherein supporting capability exchange by using CSI AS and VCC AS CSI UE and not supportive permutable VCC UE between exchange mutual performance information so that when CSI UE and VCC UE each other During communication, the performance information of VCC UE is transmitted to CSI UE by CSI AS and VCC AS.VCC UE can be used alone CS and IMS Service, but the CS and IMS service, i.e. CSI of combination can not be used so that VCC UE are unable to execution performance exchange, this and CSI UE It is different.And, VCC AS are determined based on the various standards for including the policy of radio environment, user and provider of UE etc. One of CS that the service request of UE to be delivered to and IMS domain.In addition, VCC AS are called to IMS sessions corresponding to responsible from CS Or the SIP of the positioning function of the CS Their Origin Functions and CS callings in domain transfer (transference) called from IMS sessions to CS AS, and technology defined in the corresponding standard based on such as 3GPP standards is come work.

Fig. 7 A and 7B be a diagram that according to embodiments of the present invention when VCC UE transmit CS call requests to CSI UE The flow chart of message flow.

Transmit for asking to the UE-B 717 as callee CSI UE in step 721 as the UE-A 701 of VCC UE The CS call setup message for asking CS to call.In step 721, CS call setups message by CS domains network entity 703 (for example, MSC the ISUP/BICC IAM as CS message) are converted to, and are then passed to be located in consolidated network with UE-A 701 MGCF 705.ISUP/BICC IAM are converted in step 721 MGCF 705 the SIP invitation messages as IMS message, and Then SIP invitation messages are delivered to by VCC AS 707 by IMS network.

The transmitter information that the analyses of VCC AS 707 SIP invitation messages include, and determine from CS domains still from IMS Domain transfers SIP invitation messages.When SIP invitation messages are transferred from CS domains, VCC AS 707 are in step 723 in SIP Insertion in invitation message represents the domain designator in the domain for having initiated SIP invitation messages.Domain designator may include in SIP invitation messages In " from header ", " Contact header " as the header that can represent the information about emitter, " P asserts header " or " P In charging vector header ".

Replace and cause VCC AS 707 that domain designator is inserted in SIP invitation messages, MGCF 705 can be in SIP invitation messages Middle insertion represents the domain designator in the domain for actually having initiated SIP invitation messages, while ISUP/BICC IAM are converted to into SIP Invitation message.

Transmit according to correspondence outward direction including the SIP invitation messages of domain designator, and by belonging to eventually in step 725 Only the IMS network entity 709 of square network and be delivered to for as the CSI of the support CSI of the UE-B 717 of callee CSI UE AS 711.CSI AS 711 determine whether SIP invitation messages include representing the domain designator of CS call legs (leg).When SIP is invited Please message include domain designator when, CSI AS 711 recognize the CS call setups message from CS domains triggered SIP invitation The fact that message.Then, the domain that the replacements of CSI AS 711 UE-A 701 is included in step 727 based on SIP invitation messages refers to Show symbol and information, and add the performance information of UE-A 701 to SIP invitation messages.As described above, can carry from SIP invitation messages Performance information is taken, or can by other means estimation performance information.

In this case, performance information may include to represent the service capability information (example whether UE-A 701 is located in CS domains Such as, " PS is unavailable "), represent the performance information version information for whether having changed, represent IMS registration or unregistered IMS shapes State information (for example, " IMS is unregistered ") and belong to for mark user particular UE ID, and may also include and can pass through UE Between exchange effectively utilizes various performance informations.

And, when CSI AS 711 check the media parameter that includes of SIP invitation messages and determination is in SIP invitation messages During including voice medium parameter, CSI AS 711 are in step 729 by the IMS network entity 709 of terminating party network to MGCF 713 transmission SIP invitation messages so that SIP invitation messages can be transmitted to UE-B 717 via CS domains.When having been received by including UE-A During the SIP invitation messages of 701 performance information, SIP is invited and disappeared by MGCF 713 in step 731 by means of aforementioned four kinds of schemes The performance information that breath includes is converted to the user-user information in ISUP/BICC IAM.In step 733, by MGCF 713 The ISUP/BICC IAM of conversion are delivered to the network entity 715 in the CS domains belonging to UE-B 717.CS network entities 715 are in step ISUP/BICC IAM are converted to into CC in 735 to set up message and CC is set up into message transmission to UE-B 717.UE-B 717 is in step Set up from CC in rapid 737 and extract in message the performance information of UE-A 701, and store the performance information of extraction.Thereafter, necessity is worked as When, the exchange of the assistance messages in step 739 needed for call setup of the additional execution between UE-A 701 and UE-B 717.

UE-B 717 sets up message establishing to include that the CC connections of the performance information of their own disappear in step 741 in response to CC Breath, and CC connection messages are delivered to into CS network entities 715.CS network entities 715 are converted to CC connections in step 743 ISUP/BICC CON/ANM, and ISUP/BICC CON/ANM are delivered to into MGCF 713.In this case, from CS network entities 715 to MGCF 713 routes transmit skill specified in the corresponding standard that ISUP/BICC CON/ANM are such as 3GPP standards that are based on Art.

MGCF 713 in step 745 by ISUP/BICC CON/ACM/ANM be converted to the session progress messages of SIP 183 or The OK message of SIP 200, and by means of aforementioned four kinds of schemes by the user-user information of ISUP/BICC CON/ACM/ANM The performance information of the UE-B 717 for including is encoded and is inserted in the OK message of SIP 183/200.In step 747, based on example The technology as specified in the corresponding standard of 3GPP standards, by the IMS network entity 709 belonging to UE-B 717 by 713 turns of MGCF The OK message transmissions of SIP 183/200 changed are to CSI AS 711.

CSI AS 711 extract and store the performance information that the OK message of SIP 183/200 includes in step 749, and Then according to outward direction exports as former state the OK message of SIP 183/200.In this case, CSI AS 711 can be from SIP Delete in 183/200 OK message after performance information, export the OK message of SIP 183/200.If the OK of SIP 183/200 disappear The breath UE-A 701 to be delivered to is unable to recognition performance information, then CSI AS 711 abandon the performance information.Conversely, working as UE-A During 701 energy recognition performance information, CSI AS 711 store the performance information, should to utilize in the service of UE-A 701 future Performance information.

In step 751, technology specified in the corresponding standard based on such as 3GPP standards and VCC token sounds will be passed It is delivered to the MGCF 705 of the OK message transmissions of SIP 183/200 of CSI AS 711 to the originating-side network belonging to UE-A 701. The OK message of SIP 183/200 is converted to ISUP/BICC CON/ACM/ANM by MGCF 705 in step 753, and by ISUP/ BICC CON/ACM/ANM are delivered to CS network entities 703.CS network entities 703 are in step 755 by ISUP/BICC CON/ ACM/ANM is converted to CC connection messages, and CC connection messages are delivered to into UE-A 701.ISUP/ is stored in UE-A 701 The performance information of the UE-B 717 that BICC CON/ACM/ANM include, to use in the future.

When the MGCF of the IMS network that VCC UE are located at can perform the conversion of performance information, MGCF can indicate the domain of dependence Symbol and other performance informations are encoded together and are inserted in SIP invitation messages.Conversely, the IMS network being located at as VCC UE When MGCF is unable to the conversion of execution performance information, VCC AS insert domain of dependence designator in SIP invitation messages.VCC AS 707 Or MGCF 705 may indicate that CS call legs or IMS call legs in the domain designator that SIP invitation messages include, to represent The domain of call request has been initiated.

That is, when the SIP invitation messages that VCC AS are received include performance information, VCC AS are not invited to the SIP for receiving Message adds the domain designator of CS call legs.Conversely, when VCC AS receive SIP invitation messages in include performance information When, VCC AS were called before SIP invitation messages are transmitted according to correspondence outward direction to the SIP invitation messages addition CS for receiving The domain designator of branch road.

Fig. 8 be a diagram that the flow chart of the operation of CSI AS according to embodiments of the present invention, and wherein CSI AS are illustrated as The example of the SIP AS of process performance information.

In step 801, CSI AS receive the sip message that UE is initiated.In step 803, CSI AS determine sip message pair The sip request message of Ying Yu such as invitation messages also corresponds to the SIP responses of such as 183 session processes or 200 OK message and disappears Breath.When sip message corresponds to sip request message, CSI AS proceed to step 805, and when sip message should corresponding to SIP When answering message, CSI AS proceed to step 813.

In step 805, CSI AS determine that sip request message includes domain designator or CS call legs.The domain refers to Show that symbol is obtained in the information included from the source body of sip request message, or the domain designator is relevant from including Obtain in the SIP headers of the information for having initiated the emitter of sip request message.When sip request message includes that representing CS exhales When being the domain designator of branch road, CSI AS proceed to step 807, and working as sip request message does not include representing CS call legs During the designator of domain, CSI AS proceed to step 809.For example, when sip request message does not include domain designator, or when SIP please When asking message to include not representing the domain designator of CS call paths, CSI AS proceed to step 809.

In step 807, CSI AS to sip request message adds following performance information, and the performance information includes being set to Represent the service capability information (example of the impossible value of service that values or representative of the UE in by the service in CS domains passes through ps domain Such as, " CS can use ") and be set to represent also without the IMS state information of the value for registering UE in ims.

In step 809, CSI AS add following performance information to sip request message, and the performance information includes being set to Represent the service possible values by ps domain or represent simultaneously by CS and the service capability information of the service possible values of ps domain (for example, " PS can use ") and it is set to represent the IMS state information of the value that have registered UE in ims.

In step 811, CSI AS are corrected as including the SIP request of performance information along correspondence outward direction transmission Message, and then proceed to step 817.In step 817, CSI AS wait the next message to be received, and then return to Step 801.

When determining that sip message corresponds to SIP response messages in step 803, CSI AS determine in step 813 UE's Whether performance information is included in the SIP headers of the source body of SIP response messages.When SIP response messages include performance information When, CSI AS proceed to step 815, and when SIP response messages do not include performance information, CSI AS proceed to step 811.

In step 815, CSI AS extract and store the performance information that SIP response messages include.For example, CSI AS from The IMS state information of UE is extracted in the performance information that SIP response messages include and the IMS state information extracted then is stored, Determine that (that is, relevant UE is to carry out for the service capability information of UE depending on the type in the domain for having initiated SIP response messages The UE of PS is still able to the information of the UE for carrying out CS), and and then service capability information determined by storage.In another case, SIP response messages may include the performance information of both IMS state information and service capability informations for indicating UE.

Thereafter, CSI AS proceed to step 811, and wherein CSI AS are along correspondence outward direction transmission SIP response messages.So Afterwards, in step 817, CSI AS wait the next message to be received, and then return to step 801.

Fig. 9 be a diagram that the block diagram of the configuration of SIP AS according to embodiments of the present invention.Although will be with reference to according to the present invention The configuration of the institute functional SIP AS 900 including CSI AS and VCC AS of embodiment providing following description, but should be clear Chu is understood by, and each performed in the CSI AS and VCC AS of mutually different function is optionally included with shown in Fig. 9 Functional block.The function of block shown in Fig. 9 will now be described.These functional blocks are implemented as hardware block or running software block, and pass through Unshowned operating system or system bus and be connected with each other.

In fig .9, receiving unit 910 and delivery unit 920 receive CS message or IMS message, and edge from CS domains or IMS domain Correspondence is always transmitted in outward the CS message or IMS message processed in SIP AS 900.

Type of message determining unit 909 is determined and still transfer what is received by receiving unit 910 from IMS domain from CS domains Message.

Media Analysis device 901 receives IMS message from receiving unit 910；The SDP information included based on IMS message and base Voice medium information in the information that the SIP headers and SIP message body of IMS message include is to distinguish IMS message and regard Frequently/packet media information；And according to including medium type identifying IMS message.

Data storage cell 902 temporarily or permanently stores the data provided needed for servicing and the message for being received to be included Information.

Network domains determining unit 903 depends on the data stored in data storage cell 902 and information to determine to CS domains Or pass through the message of the reception of receiving unit 910 to IMS domain.

IMS message or CS message that the establishment of data creating unit 906 will be transmitted by delivery unit 920, and based on a determination that The information that unit 903 and 909 and analyzer 901 are provided is correcting the message received by receiving unit 910.

IMS message processing units 904 are based on a determination that the information that provides of unit 903 and 909 and analyzer 901 is correcting The IMS message to be transmitted, and disappeared to construct new IMS message or the IMS message of reception is converted to into CS based on the IMS message for receiving Breath.In addition, IMS message processing units 904 have back-to-back user agent (B2BUA) and interworking function.

CS message processing units 905 are based on a determination that the information that unit 903 and 909 and analyzer 901 are provided will to correct The CS message of transmission, and construct new CS message or the CS message of reception is converted to into IMS message based on the CS message for receiving.

Domain transfer running unit 907 is shifted through CS domains and receives the UE of service will pass through IMS domain reception service, or displacement The UE for receiving service by IMS domain receives service will pass through CS domains.

Calling localization process unit 908 replaces the target address information of received message, storage with other address informations Address information after replacement, storage substituted for the information of the relevant UE of destination address, and the information based on storage provides inverse generation The service of changing.

As described above, the invention provides allow the MGCF for being responsible for interworking between CSI and IMS service be possible to into The detailed mistake of corresponding equity UE is changed and be delivered to the performance information of the UE and the UE that can only carry out IMS service of row CSI services Journey and information format.Thus, IMS UE and CSI UE can transmit the performance information of their own to reciprocity UE, and obtain reciprocity UE Performance information, so as to the utility information in service.

In addition, according to the present invention, when the UE (that is, IMS UE or VCC UE) of CSI can not be carried out to the UE that can carry out CSI During transmission call setup request, CSI AS or CSI AS and VCC AS can not carry out the UE's of CSI to the addition of SIP invitation messages Performance information, and SIP invitation messages are delivered to into CSI UE, CSI UE can use CSI using the performance information of equity UE.

Although illustrating and describing the present invention with reference to some example embodiments of the present invention, the common skill in this area Art personnel will be appreciated that the various changes that can here carry out form and details, without deviating from defined in the appended claims The spirit and scope of the present invention.Therefore, the scope of the present invention is not limited by above example, and by claim and its equivalent To limit.

Claims (22)

1. it is a kind of to be used to transmit calling party in combinational circuit exchanges CS and internet protocol multimedia subsystem IMS service CSI The method of the performance information of user equipment (UE), the method includes：

CSI application server ASs receive the first Session initiation Protocol sip request message for originating from the calling party UE, the calling party UE is IMS UE；

CSI AS generate the second sip message of the performance information comprising calling party UE；

The MGCF MGCF performances of the transmission comprising the calling party UE of the network belonging to CSI AS to CSI AS is believed Second sip message of breath；And

MGCF is included the second sip message of the performance information of the calling party UE by conversion and is transmitted to the callee UE in CS domains The performance information, the callee UE is CSI UE,

Wherein, the performance information of the calling party UE includes：(1) represent whether calling party UE can simultaneously use CS and packet switch The information of PS services；(2) whether calling party UE is represented by the IMS state information of IMS registration；(3) represent performance information whether by The version information of renewal；(4) the personal mobile device ME identifiers of calling party,

The method also includes：

The MGCF of the originating-side network belonging to calling party UE receives what the calling party UE was initiated by the CS domains belonging to calling party UE CS call request messages；And

The CS call request messages are converted to the 3rd sip message by the MGCF of originating-side network, and the 3rd SIP for being changed is disappeared Breath is delivered to the VCC application server ASs of the continuous voice call VCC services for supporting calling party UE.

2. method according to claim 1, wherein, the performance letter of calling party UE is extracted from first sip request message Breath.

3. method according to claim 1, wherein, in the generation step, the performance information of calling party UE is inserted into To in the SIP headers of second sip message.

4. method according to claim 1, wherein, in the generation step, the performance information of calling party UE according to from The predetermined format selected in extended-boundary-condition method form, text formatting and binary format, is inserted into the 2nd SIP and disappears In the source body of breath.

5. method according to claim 1, also includes：

MGCF receives the second sip message of the performance information comprising the calling party UE；

Second sip message is converted to into the CS message of the performance information comprising the calling party UE；

The CS message that MGCF passes through the performance information comprising the calling party UE described in CS domains to callee UE transmission；And

Callee UE recognizes that the callee UE can realize being connected with the IMS of calling party UE by the performance information of the calling party UE And by IMS registration, and store the performance information.

6. method according to claim 1, also includes：

CSI AS receive the SIP response messages of the performance information comprising callee UE by MGCF from callee UE；

CSI AS are extracted in the performance information of the callee UE included in SIP response messages, and store the performance of the callee UE Information；And

CSI AS to calling party UE transmits the SIP response messages.

7. method according to claim 6, also includes：

MGCF receives the CS response messages of the performance information comprising the callee UE from callee UE；

CS response messages are converted to MGCF the SIP response messages of the performance information comprising the callee UE；And

SIP response messages of the MGCF to the CSI AS transmission performance information comprising callee UE.

8. method according to claim 1, also includes：

VCC AS insert the finger for representing the CS audio calls that the request of the 3rd sip message passes through CS domains in the 3rd sip message Show symbol, to create the first sip request message；And

The first sip request message for wherein having inserted the designator is sent to CSI AS by VCC AS.

9. method according to claim 8, also includes：

CSI AS identify first sip request message comprising the designator for representing the 3rd sip message request CS audio calls, and It is determined that generate including the second sip message of performance information.

10. method according to claim 1, wherein, first sip request message is SIP INVITE.

11. methods according to claim 1, wherein, by from the CSI AS to the network entity for managing the performance information Inquire about to obtain the performance information of callee UE.

12. one kind are used to transmit calling party in combinational circuit exchanges CS and internet protocol multimedia subsystem IMS service CSI The system of the performance information of user equipment (UE), the system includes：

Calling party UE, the calling party UE is IMS UE；

Callee UE, the callee UE is CSI UE；And

CSI application server ASs, it is raw for receiving the first Session initiation Protocol sip request message for originating from the calling party UE Into the second sip message of the performance information comprising calling party UE, and to the media net of the originating-side network belonging to calling party UE The second sip message of control function MGCF performance information of the transmission comprising the calling party UE is closed, MGCF includes the master by conversion Second sip message of the performance information of the side of crying UE and transmit the performance information to the callee UE in CS domains,

Wherein, the performance information of the calling party UE includes representing whether calling party UE can simultaneously use CS and packet switch PS to take The information of business, represent calling party UE whether by the IMS state information of IMS registration, represent the version whether performance information is updated Information and the personal mobile device ME identifiers of calling party,

Wherein, the MGCF receives the CS call request messages that the calling party UE is initiated by the CS domains belonging to calling party UE, will The CS call request messages are converted to the 3rd sip message, and the 3rd sip message changed is delivered to into support calling party UE's The VCC application server ASs of continuous voice call VCC services.

13. systems according to claim 12, wherein, the performance of calling party UE is extracted from first sip request message Information.

14. systems according to claim 12, wherein, the CSI AS will represent the feature of the performance information of calling party UE Mark is inserted in the SIP headers of second sip message.

15. systems according to claim 12, wherein, the CSI AS are according to from extended-boundary-condition method form, text The predetermined format selected in form and binary format, by the performance information of calling party UE disappearing for second sip message is inserted into In breath main body.

16. systems according to claim 12, also include：MGCF MGCF, for receiving comprising the master Second sip message of the performance information of the side of crying UE, by second sip message performance information comprising the calling party UE is converted to CS message, and by CS message from CS domains to the callee UE transmission performance information comprising the calling party UE, to permit Perhaps callee UE recognizes the callee UE by IMS registration and can realize and calling party UE by the performance information of the calling party UE IMS connections, and store the performance information.

17. systems according to claim 12, wherein, the CSI AS are received comprising called by MGCF from callee UE The SIP response messages of the performance information of square UE, are extracted in the performance information of the callee UE included in SIP response messages, and deposit The performance information of the callee UE is stored up, and the SIP response messages are transmitted to calling party UE.

18. systems according to claim 17, wherein, MGCF receives the performance comprising the callee UE from callee UE to be believed The CS response messages of breath, by CS response messages the SIP response messages of the performance information comprising the callee UE, Yi Jixiang are converted to The SIP response messages of the CSI AS transmission performance information comprising callee UE.

19. systems according to claim 12, wherein, VCC AS are inserted in the 3rd sip message and are represented the 3rd SIP The designator of the CS audio calls that message request passes through CS domains, to create the first sip request message, and wherein will insert First sip request message of the designator is sent to CSI AS.

20. systems according to claim 19, wherein, CSI AS identify first sip request message comprising represent this Three sip messages ask the designator of CS audio calls, and determine that generation includes the second sip message of performance information.

21. systems according to claim 12, wherein, first sip request message is SIP INVITE.

22. systems according to claim 12, wherein, by from the CSI AS to the network entity for managing the performance information Inquire about to obtain the performance information of callee UE.